Amazon.co.uk offers The Big Bang Theory: Seasons 1 to 8 on Blu-ray Disc for $39.50 (£27.80). Add it to your cart and proceed to checkout to drop it to $32.92 (£23.17). With $4.38 (£3.08) for shipping, that's $5 under our mention from three weeks ago and the lowest total price we've seen. (It's the best now by $19.)

This Blu-ray set is region-free; the episodes themselves will play on US Blu-ray players, but the extras and special features may not.